Elementary algebra is the most basic form of algebra. 1  It is taught to students who are presumed to have no knowledge of mathematics beyond the basic principles of arithmetic. In arithmetic, only numbers and their arithmetical operations (such as +, â, Ã, Ã·) occur.
When using vinyl masking as a stencil, allow the etching cream to remain on the glass for 5 minutes.After 5 minutes, use water to rinse off the etching cream. Rinse from the top of the project down, work quickly and use your brush to help.
The most common metal that is used for etching is copper followed by aluminum. These are the easiest metals to etch. To prepare the metal for etching you have to cover the face of the metal with a thin layer of wax. The best kind of wax is bees wax although paraffin will work as well. After this thin layer of wax has hardened it is time to start making the master for the etching.